Device to unseat tire valves



L. B. SOLEMINK DEVICE TO UNSEAT TIRENALVES Nov. 27 19 Original Filed July 18 1921 SIM want z LlE'Hfl El- .5 D15 mink M a W M w W? www 50 tion, arrangement and formation of l1parts,

Patented Nov. 27, 1923.

UNITED STATES 1,475,249 PATENT OFFICE.

LLOYD B. SOLEMINK, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO A. SCHRADERS SON, INCORPORATED, OF BROOKLYN,

NEW YORK, A CORPORATION OF NEW YORK.

* DEVICE TO UNSEAT TIRE VALVES.

Application filed July 18, 1921, Serial 10 type whichare utilized in connection with pneumatic vehicle tires and the primary object of the invention is to provide an im proved means for unseating the valve, in

order to facilitate the deflating of the tire.

In the ordinary procedure of deflating an inner tube of a tire, the valve is manuall held unseated which is a tiresome and-ted1- ous procedure or the whole valve is removed from the stem, which subjects the'valve to breakage or displacement and the likelihood of the same becoming clo ged with dirt. There is also a den r in t is procedurein the'cap itself becoming lost, while detached from the stem.

It is therefore a primeobject of this invention to provide a novel cap provided with means for holding the'same on the stem of a valve casing in an inverted position and a novel means formed on the cap for engaging the valve stem when in this position in order to hold the valve unseated, and thereby. eliminate the inconveniences a outlined above.

A further object of the invention is to rovide a valve cap having resilient means ormed thereon for holding the same in position onthe valve stem and a novel means arranged adjacent to the resihent means for engaging and depresslngthe valve stem.

A still further object of the invention is to rovide an improved cap having valve de ating means formed thereonof the above character, which is durable and eflicient in use, one that is sim lo and easy to manufacture, and one whichcan be placed upon the market at a reasonable cost.

With these and other objects in view,

the invention consists in the novel construcas will be reinafter more specifica described, clainzled and illpstrated in thlet ac com anym'grawin ormmg a pa 0 thi's specification, in ivhich dra Figure 1 is a longitudinal external threads portion 12 of the valve casing 5.- The valve provides: a

No. 485,583. Renewed February 8, 1928.

sectional view through an ordinary valve showing a valve cap constructed according to my invention in engagement therewith for holding the valvestem in its unseated position in order to facilitate deflating of a tire.

Fig. 2 is an enlarged longitudinal .section through the valve cap and,

Fig. 3 is a top plan view of the valve cap. Referring to the drawings in detail, wherein similarreference characters designate corresponding parts throughout the several views, the letter A indicates the novel valve cap and B an ordinary valve of the type utilized on inner tubes of vehicle tires.

Thevalve B includes'the usual -valve casing 5 having the valve seat'6 therein a ainst which is adapted to fit the usual va ve 7, which includes the outwardly extending valve stem 8,

The valve cap A is constructed along the lines of the usual or approved ca and includes thebod 9, which is provided with the internal tii reads 10 for engaging the 11 formed on the reduced casing 5 is provided with threads 13, for the reception of the usual dust or guard cap, which has not been,shown. The outer end of the body 9 is provided with the usual reinforcing annular rib 14 and the extreme outer end of the cap is provided with an outwardly extending nipple or screw driver extension15. The outer end of the nipple 15 is provided with a slot 16 in order to engage the valve insides when it is desired to remove the same from the casing 5. The valve cap A is provided with a packing gasket 16', for engaging the outer end of vthe. reduced 5 to dust air vfrom the tire. As fa'i' as describecfl, candbe seen that the va ve' ca is o e or inary t The outer end of the body portion!) is gi ovided with an outwardly extending lug 17 which shoulder or head 18, the purpose of which ,will be hereinafter more fully described. This lug 17- does not project beyond the external threads 13 formed on the casing 5, so as to be out of the way of the ordinary dust and ard cap when the Same is fitted 0n the casin The outer end portion 12 of the casin seal the same against the entrance 0 and leakage of iof the body 9 is also provided with an out wardly extending inclined resilient leg or member 20 the free terminal of which is provided with a tooth 21, which is adapted to engage in the internal threads 22 formed on the inner surface of the reduced extension 12 of the casing 5, the purpose of which will be also hereinafter more fully described. The nipple 15 formed on the outer end of the body 9 is provided with}; longitudinally extending rack face 23 directly op posite to the resilient leg 20, as is clearly shown in Figures 1 to 3 of the drawings.

When it is desired to deflate the tire and unseat the valve 7 it is merely necessary to remove the cap A from the reduced extension 12 of the casing 5 and invert the same. The resilient leg 20 is slid into the reduced extension 12, while the nipple 15 takes a position along side of the reduced extension 12 in intimate engagement therewith. The rack face 23 formed on the nipple 15 engages the external threads 11 of the reduced extension 12 while the tooth 21 engages the internal threads 22. The resiliency of the leg 20 holds the rack face 23 in engagement with the threads 11 and absolutely prevents the displacement of the cap from the stem casin The shoulder or head 18 engages the va ve stem 8 and'depresses the same as is apparent by referring to Figure 1 of the drawing. Thus it can be seen that when it is desired to deflate the valve it is merely necessary to place the; cap in the position shown in Figure 1 which will eflectively unseat the valve and permit the air to escape from the tire. The tire inner tube can then be readily and conveniently rolled up by a single person without any difliculty whatsoever. i

From the foregoing description, it can be seen that an exceptionally simple and durable device has been provided for permitting v end of the ready deflation of an inner tube when desirable.

Changes in details may be made without departing fromthe spirit or scope of this invention, but what I claim as new is,

1. The combination with a pneumatic tire valve including a casing and a valve stem, of a cap for the casing including a projection adapted to engage the outer the casing, resilient means formed on the cap for engaging the inner surface of the casing and for holdin the projection in intimate engagement wi the outer surface of the casing and means carried by the cap for engaging the valve stem to hold the valve unseated.

face 0 the casing to hold the projection in intimate contact with the outer surface thereof, and a shoulder on the cap arranged to engage the valve stem to hold the same in a depressed position when the cap is in its inverted position on the valve casing.

3. The combination with a pneumatic tire valve including a casing having internal and external threads formed thereon and a valve inside therein, of a cap having an internally screw threaded body, and a reduced projection, said projection having a rack face arranged to engage the external thread of the casing when the cap is in its inverted position, a resilient member carried by the cap arranged to engage the inner threads of the casing for holding the rack face and the projection in engagement, and a shoulder formed on-the cap arranged to depress the valve stem when the parts are in said position.

4. A valve cap comprising a body, a radially extending lug formed onthe body of the cap defining a valve stem engaging shoulder and a resilient member formed on the cap arranged to engage the inner surface of the stem of the valve casing.

.05. A valve stem cap comprising a body,

and an outwardly extending projection, a radially extending lug formed on the outer surface of the body defining a valve stem engaging shoulder, a resilient leg formed on the lug, a tooth formed on the outer end of the resilient leg, and'a rack face formed on the lprojection directly opposite said resilient eg.

6. combined valve cap and deflator, comprising a body portion and an axial projectlon, said parts having means adapted .to engage both the interior and exterior of the end of a valve casing and hold the valve therein unseated.

7. A combined valve cap and deflator; comprising a body portion having a part adapted to unseat the valve within a valve casing, and spring means adapted to engage the interior of the valve casing to hold the body portion in valve unseatingposition thereon.

LLOYD B.- SOLEMINK. 

